Kohoutech 

library for working with Origami Internal Language

library for playing, editing and storing audio wave data

library for working with VST plugins

library for displaying and editing musical scores

library of common widgets used by the UIs of Kohoutech software

(just what) Everybody Needs - Another Markup Language (ENAML) library for saving program data to a structured text file with a simple syntax

library for playing, editing and storing MIDI data

library for working with the ia32 instruction set

library for routing signals using a graphical user interface

library for displaying and editing Windows internals